Sulfur Dioxide Calibration Gas Mixture 10ppm
Trace-level sulfur dioxide at 10 ppm in nitrogen balance in certified calibration cylinders for environmental air quality monitoring equipment. The sulfur dioxide is the principal component of interest, and the mixture is classified under this tariff item as an inorganic oxygen compound. The product is used for calibrating gas detection instruments.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is hydrogen fluoride instead
Hydrogen fluoride is a distinct inorganic acid with its own tariff heading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the mixture is classified as a chemical compound and not as a prepared gas mixture under Chapter 38
• Provide the CBSA with the certificate of analysis showing the exact SO2 concentration
• Ensure the calibration cylinders are properly labeled with the expiry date and certification standard
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